Just thinking along these lines, and assuming rape and murder: If this was a random act, IY and his possible accomplices probably didn't come prepared to bury someone. So if she is in Auburn I would think they put her in some kind of container and duct taped it up or just dumped her in the woods or in a pond. If they did bury her, they probably had to go to Wal-Mart to buy tools or they stole some (LE could check W-M video & could ask public to report stolen tools). They probably didn't have time to rape, murder, acquire tools, and bury her within that hour, so if she is buried it may be more likely she is not in Auburn. Factor in the amount of blood in the car. Characteristics of the blood evidence, considering how much there is and how fast a body bleeds when dying or dead, LE may have some idea of the likelihood she is still in Auburn, if they really did leave at 12:30. Sorry for morbid thoughts.